211221022222253 has 2 divisors, whose sum is σ = 211221022222254. Its totient is φ = 211221022222252.

The previous prime is 211221022222157. The next prime is 211221022222261. The reversal of 211221022222253 is 352222220122112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206505579571204 + 4715442651049 = 14370302^2 + 2171507^2 .

It is a cyclic number.

It is not a de Polignac number, because 211221022222253 - 2³² = 211216727254957 is a prime.

It is a super-2 number, since 2×211221022222253² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211221022225253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105610511111126 + 105610511111127.

It is an arithmetic number, because the mean of its divisors is an integer number (105610511111127).

Almost surely, 2^{211221022222253} is an apocalyptic number.

It is an amenable number.

211221022222253 is a deficient number, since it is larger than the sum of its proper divisors (1).

211221022222253 is an equidigital number, since it uses as much as digits as its factorization.

211221022222253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 211221022222253 its reverse (352222220122112), we get a palindrome (563443242344365).

The spelling of 211221022222253 in words is "two hundred eleven trillion, two hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, two hundred fifty-three".